body {
    font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f9f9f9;
    color: #333;
}

header {
    background-color: #004466;
    color: white;
    padding: 30px 20px;
    text-align: center;
}

header h1 {
    margin: 0;
    font-size: 28px;
}

header p {
    margin-top: 10px;
    font-size: 16px;
}

.section-title {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 50px 0 20px;
    width: 100%;
    box-sizing: border-box;
}

.section-title h2 {
    color: #004466;
    font-size: 26px;
    border-bottom: 2px solid #004466;
    padding-bottom: 5px;
}

.product-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 30px;
    padding: 20px;
}

.product {
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 20px;
    width: 300px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.product h2 {
    font-size: 18px;
    color: #004466;
    margin-top: 0;
}

.product ul {
    padding-left: 20px;
    margin: 15px 0;
}

.product li {
    margin-bottom: 5px;
    line-height: 1.5;
}

.price {
    font-size: 20px;
    font-weight: bold;
    color: #cc0000;
    margin-bottom: 10px;
}

.note {
    font-size: 14px;
    color: #555;
    margin-bottom: 15px;
}

.buy-btn {
    display: inline-block;
    background-color: #004466;
    color: white;
    padding: 10px 15px;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

.buy-btn:hover {
    background-color: #006699;
}

footer {
    text-align: center;
    padding: 20px;
    background-color: #f1f1f1;
    color: #666;
    font-size: 14px;
    margin-top: 40px;
}